update

sensirion/README.md

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+# Sonde Sensirion SFA30
+
+La sonde est connecté sur le port UART5. On peut utiliser la [bilbio python officielle](https://sensirion.github.io/python-shdlc-sfa3x/installation.html).
+
+## Installation 
+
+```
+sudo pip3 install sensirion-shdlc-sfa3x --break-system-packages
+```

sensirion/SFA30_read.py

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+'''
+Read data from sensor (only once)
+/usr/bin/python3 /var/www/moduleair_pro_4g/sensirion/SFA30_read.py
+'''
+
+import time
+import json
+
+from sensirion_shdlc_driver import ShdlcSerialPort, ShdlcConnection
+from sensirion_shdlc_sfa3x import Sfa3xShdlcDevice
+
+# Connect to the device with default settings:
+#  - baudrate:      115200
+#  - slave address: 0
+with ShdlcSerialPort(port='/dev/ttyAMA5', baudrate=115200) as port:
+    device = Sfa3xShdlcDevice(ShdlcConnection(port), slave_address=0)
+    device.device_reset()
+
+    # Print device information
+    #print("Device Marking: {}".format(device.get_device_marking()))
+
+    # Start measurement
+    device.start_measurement()
+    #print("Measurement started... ")
+    
+    time.sleep(5.)
+    hcho, humidity, temperature = device.read_measured_values()
+
+    # Prepare data as a JSON object
+    data = {
+        "formaldehyde_ppb": hcho.ppb,
+        "humidity_percent": humidity.percent_rh,
+        "temperature_celsius": temperature.degrees_celsius,
+    }
+        
+    # Convert the dictionary to a JSON string
+    json_output = json.dumps(data, indent=4)
+    print(json_output)

sensirion/SFA30_read_loop.py

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+import time
+from sensirion_shdlc_driver import ShdlcSerialPort, ShdlcConnection
+from sensirion_shdlc_sfa3x import Sfa3xShdlcDevice
+
+# Connect to the device with default settings:
+#  - baudrate:      115200
+#  - slave address: 0
+with ShdlcSerialPort(port='/dev/ttyAMA5', baudrate=115200) as port:
+    device = Sfa3xShdlcDevice(ShdlcConnection(port), slave_address=0)
+    device.device_reset()
+
+    # Print device information
+    print("Device Marking: {}".format(device.get_device_marking()))
+
+    # Start measurement
+    device.start_measurement()
+    print("Measurement started... ")
+    while True:
+        time.sleep(10.)
+        hcho, humidity, temperature = device.read_measured_values()
+        # use default formatting for printing output:
+        print("{}, {}, {}".format(hcho, humidity, temperature))